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-rw-r--r--src/vppinfra/pmalloc.c32
-rw-r--r--src/vppinfra/pmalloc.h4
2 files changed, 30 insertions, 6 deletions
diff --git a/src/vppinfra/pmalloc.c b/src/vppinfra/pmalloc.c
index 5812f9fa120..98e3369bbca 100644
--- a/src/vppinfra/pmalloc.c
+++ b/src/vppinfra/pmalloc.c
@@ -62,6 +62,7 @@ int
clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size)
{
uword off, pagesize;
+ u64 *pt = 0;
ASSERT (pm->error == 0);
@@ -70,6 +71,11 @@ clib_pmalloc_init (clib_pmalloc_main_t * pm, uword size)
pm->sys_log2_page_sz = min_log2 (sysconf (_SC_PAGESIZE));
pm->lookup_log2_page_sz = pm->def_log2_page_sz;
+ /* check if pagemap is accessible */
+ pt = clib_mem_vm_get_paddr (&pt, pm->sys_log2_page_sz, 1);
+ if (pt == 0 || pt[0] == 0)
+ pm->flags |= CLIB_PMALLOC_F_NO_PAGEMAP;
+
size = size ? size : ((u64) DEFAULT_RESERVED_MB) << 20;
size = round_pow2 (size, pagesize);
@@ -206,9 +212,19 @@ pmalloc_update_lookup_table (clib_pmalloc_main_t * pm, u32 first, u32 count)
vec_validate_aligned (pm->lookup_table, vec_len (pm->pages) *
elts_per_page - 1, CLIB_CACHE_LINE_BYTES);
- fd = open ((char *) "/proc/self/pagemap", O_RDONLY);
-
p = first * elts_per_page;
+ if (pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP)
+ {
+ while (p < elts_per_page * count)
+ {
+ pm->lookup_table[p] = pointer_to_uword (pm->base) +
+ (p << pm->lookup_log2_page_sz);
+ p++;
+ }
+ return;
+ }
+
+ fd = open ((char *) "/proc/self/pagemap", O_RDONLY);
while (p < elts_per_page * count)
{
va = pointer_to_uword (pm->base) + (p << pm->lookup_log2_page_sz);
@@ -273,10 +289,13 @@ pmalloc_map_pages (clib_pmalloc_main_t * pm, clib_pmalloc_arena_t * a,
return 0;
}
- mmap_flags = MAP_FIXED | MAP_ANONYMOUS | MAP_LOCKED;
+ mmap_flags = MAP_FIXED | MAP_ANONYMOUS;
+
+ if ((pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP) == 0)
+ mmap_flags |= MAP_LOCKED;
if (a->log2_subpage_sz != pm->sys_log2_page_sz)
- mmap_flags |= MAP_HUGETLB;
+ mmap_flags |= MAP_HUGETLB | MAP_LOCKED;
if (a->flags & CLIB_PMALLOC_ARENA_F_SHARED_MEM)
{
@@ -628,9 +647,10 @@ format_pmalloc (u8 * s, va_list * va)
clib_pmalloc_arena_t *a;
s = format (s, "used-pages %u reserved-pages %u default-page-size %U "
- "lookup-page-size %U", vec_len (pm->pages), pm->max_pages,
+ "lookup-page-size %U%s", vec_len (pm->pages), pm->max_pages,
format_log2_page_size, pm->def_log2_page_sz,
- format_log2_page_size, pm->lookup_log2_page_sz);
+ format_log2_page_size, pm->lookup_log2_page_sz,
+ pm->flags & CLIB_PMALLOC_F_NO_PAGEMAP ? " no-pagemap" : "");
if (verbose >= 2)
diff --git a/src/vppinfra/pmalloc.h b/src/vppinfra/pmalloc.h
index 41b85e0c517..9cd652971a6 100644
--- a/src/vppinfra/pmalloc.h
+++ b/src/vppinfra/pmalloc.h
@@ -60,6 +60,10 @@ typedef struct
typedef struct
{
+ /* flags */
+ u32 flags;
+#define CLIB_PMALLOC_F_NO_PAGEMAP (1 << 0)
+
/* base VA address */
u8 *base;